Work table and movable workholder therefor



March 30, 1965 F. GLAUDE 3,175,332

WORK TABLE AND MOVABLE WORKHOLDER THEREFOR Filed April 24, 1963 4Sheets-Sheet l I II f @12- 5 7 IO fi l ///////4 .i

27 H I? l7 1 I l I "LLHHiH'iiiH1I i INVENTOR. LEOPOLD F. GLAUDE xmom N 4Sheets-Sheet 2 L. F. GLAUDE March 30, 1965 woax TABLE AND MOVABLEWORKHOLDER THEREFOR Filed April 24, 1963 Qwwa March 30, 1965 1.. F.GLAUDE 3,175,332

WORK TABLE AND MOVABLE WORKHOLDER THEREFOR Filed April 24, 1965 4Sheets-Sheet 5 \W MHMF INVENTOR. Lao ow E GLAUDE March 30, 1965 L. F.GLAUDE WORK TABLE AND MOVABLE WORKHOLDER THEREFOR 4 Sheets-Sheet 4 FiledApril 24, 1963 INVENTOR. LEOPOLD F. GLAUDE BY MQKW United States Patent3,175,332 WORK TABLE AND MUVABLE WGRKHOLDER THEREFUR Leopold F. Glaude,2314 N. Kiipatricit, Chicago 39, Ill. Filed Apr. 24, 1963, Ser. No.275,430 7 (Ilaims. (Cl. 5124G) This invention relates to a machine tooland, more particularly, to a power machine tool which is particuiarlyadapted for use in connection with the working of metal or other partsby means of a rotary abrasive grinding disc or wheel, or other device.

An object of the present invention is to provide a new and improved andrelatively simple machine tool for use in the working of metal or otherparts by means of a rotary abrasive grinding disc or wheel, or otherdevice.

Heretofore in the art of machine tools for the grinding of metal orother objects, it has been customary to provide work-holding means onthe machine so designed, constructed and arranged that the means formoving or adjusting the work on and relative to the bed of the machinehave been relatively complicated and expensive in construction anddifficult to operate without special knowledge and skill.

An object of the present invention is, therefore, to provide a new andimproved machine tool embodying means for adjusting the work relative tothe bed of the machine, and relative to an abrasive grinding disc orother device, which is relatively simple and inexpensive in constructionand simple and easy to operate, without the need for or exercise of anyspecial skill, so that the new machine tool may be easily operated byhome work shop operators, and others.

Another object of the invention is to provide in the new machine tool anovel combination of operating means for moving the work-holding tablelaterally relative to the bed of the machine and a novel means, incombination therewith, additional operating means for moving thework-holding table longitudinally relative to the bed of the machine,and relative to an abrasive grinding disc or other device used inconjunction therewith.

An additional object of the invention is to provide in the new machinetool a novel construction and arrangement for pivotally and adjustablymounting the bed of the machine, the work-holding table, and theoperating means for moving the work-holding table relative to the bed ofthe machine, on the supporting frame of the machine, so that the entireassembly may be adjusted relative to an abrasive grinding disc or otherdevice.

Heretofore in the art of machine tools employing a rotary abrasivegrinding disc it has been customary to have the parts so constructed andarranged that the rotary abrasive grinding disc would engage asubstantial part of one lateral surface of the work, in the form of ametal or like object, during a grinding, beveling or like operation, andwould grind away a substantial por tion thereof, even when it wasdesired to grind or bevel only an edge portion of the work.

A further object of the present invention is to provide a new andimproved machine tool embodying a grinding machine which may be used forgrinding, beveling and like operations on metal objects employing arotary abrasive grinding disc or wheel, and in which the rotary abrasivegrinding disc may be adjusted relative to the work-holding means in sucha manner that only a limited part of the metal object or work beingground or abraded will be engaged by the rotary abrasive grinding discor wheel.

Other objects will appear hereinafter.

3,175,332 Patented Mar. 30, 1965 In the drawings:

FIG. 1 is a front elevational view of a machine tool embodying thepresent invention;

FIG. 2 is a top plan View thereof on line 22 in FIG. 1;

FIG. 3 is an end elevational view as seen from the right-hand end inFIGS. 1 and 2;

FIG. 4 is a view on line 4-4 in FIG. 2, partly in elevation and partlyin section;

FIG. 5 is an end elevational view on line 5-5 in FIG. 2;

d6. 6 is an enlarged transverse sectional detail view on line 66 in FIG.2;

FIG. 7 is an enlarged transverse sectional detail view on line 77 inFIG. 2;

FIG. 8 is an enlarged transverse sectional view, partly in elevation, online 88 in FIG. 2; and

FIG. 9 is an exploded perspective view of the major parts embodied inthe invention.

A preferred embodiment of the present invention is illustrated in thedrawings, wherein 'it is generally indicated at 10, and comprises asupporting frame, generally indicated at 43, which may be of anysuitable construction. A horizontally extending bed 11 is mounted on thesupporting frame 43 and a tool in the form of a power-driven rotaryabrasive grinding disc or head 12 is arranged over the machine. A fiathorizontally extending and generally rectangular-shaped work-holdingtable 13 is movably mounted on the bed 11 for movement relative thereto,in a manner which will be described hereinafter, and this work-holdingtable 13 has a longitudinally extending channel or groove 14 formedtherein for the reception of a work-holding unit (not shown) but whichmay be of any suitable type for holding a piece of metal work, or othermaterial, on the work-holding table 13, and for movement therewithrelative to the abrasive grinding disc head 12 or similar device. Thenew machine tool includes a novel means for operating or moving thework-holding table 13 longitudinally relative to the bed 11, and thisoperating means includes a rack member 15 which is attached to onelateral edge of the work-holding table 13, as by screws 17 (FIG. 2).This rack member 13 includes a row of rack teeth 16 on its bottom edgeand the rack member 1546 projects longitudinally of the table bed 11,and to one side thereof, as shown in FIGS. 1 and 2 of the drawings.

A shaft 18 extends transversely and horizontally across the table bed11, at one side thereof, as best shown in' FIG. 2 of the drawings, andthis shaft 18 is mounted in suitable bearing members 19 which arecarried by the bed 11 of the machine, one of the bearing supportingmembers 19 being arranged adjacent each end of the shaft 18. A rackguiding unit, comprised of a pair of spaced parallel upright guidemembers 240 is provided for the rack 15-16, and -a cap plate member 23extends between these upright plate members 20 and is attached to theupper surfaces thereof, as by screws 24, as best shown in FIG. 7, therack 15-16 extends between the guide members 20 below the cap plate 23.The shaft 18 extends through aligned openings 58 in the rack guidemembers 20 (FIGS. 6 and 7) and each of the rack guide members 26 has agenerally rectangular-shaped notch or recess formed in its inner surfacefor the reception of one side arm portion 27 of a generally U-shapedoperating member 25 (FIGS. 5 and 9) which is adapted 3 rack gear 22meshes with the teeth 16 of the rack -16 (FIG. 7).

A hand wheel 21 is mounted on the shaft 18, at the front of the machine,as shown in FIGS. 1 and 2, and the shaft 18 is adapted to be rotated bymanipulation of the hand wheel 21 which, in turn, acts through the rackgear 22 to manipulate the rack 15-16 and the workholding table relativeto the table bed 11.

Hence, it will be seen that the shaft 18, hand wheel 21, rack gear 22and rack 15-16 provide an opening means for moving the Work-holdingtable 13 longitudinally on and relative to the bed 11 of the newmachine.

In addition to the aforesaid novel means 18-21-22-16 for operating ormoving the work-holding table 13 longitudinally relative to and acrossthe bed 11, the present invention provides a second and additional noveloperating means, for moving the work-holding table 13 laterally ortransversely across and relative to the bed 11 of the machine, and thissecond operating means will now be described.

To this end, the present invention provides a generally U-shapedoperating member 25, as best shown in FIG. 9, and which includes a frontwall portion 26, and a pair of parallel side arm portions 27 which arearranged at the opposite ends of the front wall portion 26, the parallelside wall portions 27 being arranged at opposite ends of thework-holding table 13. A raised longitudinally extending guide rib 28 isprovided on the front wall portion 26 of the U-shaped operating member25, for a reason which will be described hereinafter.

A plurality of generally L-shaped guide bracket members 29, shown asbeing three in number, are attached to the upper surface of thework-holding table 13, adjacent one edge thereof, as shown in FIG. 9,and each of these bracket members 29 has a depending guide arm portion30 which projects downwardly at one side of, and relative to onelongitudinal edge, of the work-holding table 13. The longitudinallyextending guide rib 28 is adapted to bear against and to engage an edgeportion or wall 70 of the work-holding table 13 (FIG. 9). Thus, when theparts are arranged in position of use, as in FIGS. 1 and 2, thedepending guide arms 39 of the bracket members 29 project downwardlyover the upstanding longitudinally extending rib 28 which is provided onthe front wall of the U-shaped operating member 25.

The table bed 11 has a pair of pivot members 31 mounted therein, atopposite sides thereof, and adjacent one end thereof, for reasons whichwill be pointed out presently.

The front wall 26 of the U-shaped operating member has a supporting arm32 projecting laterally therefrom at one side thereof and this arm 32has an attaching bracket portion 32a which is attached to the front wallportion 26 of the U-shaped operating member 25 (FIG. 9). A threadedbushing 33 is attached to the supporting arm 32, on the bottom surfacethereof, by means of a pin 42, and an operating screw 34 projectsthrough this threaded bushing 33 and has a hand wheel 39 mounted thereonat its outer or front end and at the front of the machine.

A supporting bracket 35 is attached to the table bed 11, at the front ofthe machine, and has a depending arm 38 thereon at its outer end, andthis depending arm 38 has an opening therein for the reception of theoperating screw 34. Thus, when the parts are arranged in position ofuse, the operating screw 34 projects through an opening in the dependingarm 38 of the bracket 35 and is threaded into the threaded bushing 33.

An upright guide member 41 is attached to one side edge 37 of the bed 11of the machine, at the front thereof, and this guide member 40 has aguide arm 41 projecting therefrom (FIG. 9).

A U-shaped pivot mounting member 71 is attached to the supporting frame43 of the machine, at one end thereof, by means of U-shaped attachingbrackets 44 and bolts 45, and this U-shaped pivot mounting member 71 hasa pair of upstanding end walls 73 at the ends thereof, each of which hasan opening 74 therein for the reception of one of the pivot members 31on the bed 11 of the machine.

An L-shaped bracket 49 is attached to the bed 11 of the machine on thebottom surface thereof, as shown in FIG. 6, and this L-shaped bracket 49has a depending arm 50 which extends into a U-shaped guide bracketmember 51, which is attached, as by screws 52 to the depending flange 50of the bracket 49. A micrometer adjusting screw 54, having a head 55, isrotatably mounted in a threaded bearing block 53 which is attached tothe U-shaped bracket 51 (FIGS. 3 and 6).

The new machine tool 10 is shown as including an abrasive grinding dischead 12 which includes a supporting bracket 58 mounted on an uprightsupporting post 59 at one end of the machine. A hand lever 61 is mountedon a bracket 60 which is carried by the post 59. The bracket member 58carries an arbor 67 on which an abrasive grinding disc 68 is mountedunder a suitable protective shield 69. The abrasive grinding disc head12 is adjustably mounted, as by a bolt 62, on the upright supportingpost 59, and a clamping nut 63 is mounted on the bolt 62. An arcuateslot 64 is provided in the bracket structure 58 and a headed guide bolt65 extends through the arcuate slot 64 into the upright supporting post59.

In the use of the new machine tool the parts may be assembled as shownand when thus arranged a workholding block or clamp (not shown) may bemounted in the channel-shaped groove 14 in the Work-holding table 13 formovement with the work-holding table 13 relative to the bed 11 of themachine and relative to the abrasive grinding disc head 12 and abrasivegrinding disc 68. When so arranged the work-holding table 13, and thework thereon, may be moved longitudinally relative to the bed 11 of themachine by manipulating the hand wheel 21, which acts through the shaft18, the rack gear 22, and the rack 15-16 to slidably move thework-holding table 13 longitudinally relative to the bed 11 of themachine. During this operation the work-holding table 13 is slidablyguided upon and relative to the U-shaped operating member 25 by theengagement of the depending arms 31 of the bracket members 29 over theupstanding guide rib- 28 on the U-shaped operating member 25.

In order to move the work-holding table 13, and the work carriedthereby, transversely relative to and across the bed 11 of the machine,and below the abrasive grinding disc head 12-68-69, the hand wheel 39may be manipulated so as to rotate the operating screw 34 in itsmountings in the depending arm 38 of the supporting bracket 35, and inand relative to the threaded bushing 33, and this movement of theoperating screw 34 acts, through the arm 32 and attached bracket portion33, to slidably move the U-shaped operating member 25, and thework-holding table 13 transversely across and relative to the bed 11 ofthe machine, and below the abrasive grinding disc head 12-68-69. Duringthis operation, the upstanding longitudinally extending guide rib 28 onthe front wall 26 of the U-shaped operating member 25 engages the frontedge portion or wall 71 of the work-holding table 13.

It will be noted that when the work-holding table 13 is thus slidablymoved and guided laterally across and relative to the bed 11 of themachine, the guide bracket unit 20-23-24 for the rack 15-16 is movedwith the U-shaped operating member 25 by reason of the fact that theguide bracket structure 20-23-24 for the rack 15-16 is carried by onearm 27 of the U-shaped operating member 25 (FIGS. 6 and 7).

Likewise, during this operation the arm 41 of the member 411, which ismounted on the front wall of the bed 11, acts as a guide for thesupporting arm 32 which is carried by the U-shaped operating member 25.

It will be noted that the entire assembly of the bed 11 aivassa of themachine, the U-shaped operating member 25, and work-holding table 13,and the parts carried thereby, is pivotally mounted as a unit on thepivot members 31, which are pivotally mounted in the openings 72 in theupright arms 73 of the pivot mounting bracket 71. In order to pivotallyadjust the entire assembly of the bed 11 of the machine, the U-shapedoperating member 25, and the work-holding table 13, upon and relative tothe supporting frame 43, and relative to the abrasive disc head l268-69,the micrometer screw 54-55 may be manipulated against the bottom of thebed 11 of the machine so as to pivot the entire assembly 11-25-13 on thepivot members 31, and relative to the pivot mounting bracket 21-72-7374,so as to manipulate the work-holding table 13 and the work carriedthereby in a micrometric adjustment, relative to the abrasive disc head126869.

The entire abrasive disc head 126869 may be adjusted on the uprightsupporting post 59 by loosening the nut 63 on the supporting bolt 62,and loosening the clamping bolt 65 in the slot 64, and manipulating thesupporting structure 59 so as to vary the angle of inclination of theabrasive disc unit 12-68-69 relative to the work-holding table 11 andthe work in the groove 14 thereof.

This adjustment of the abrasive disc unit 12458459 enables the abrasivegrinding disc unit 12-68-69 to be moved in a vertical are relative tothe work-holding table 13 and this enables a relatively small area orsurface of the abrasive disc 68 to be brought into contact with the Workheld in the work-holding groove 14 of the workholding table 13 and thusavoids the necessity for engaging a large surface area of one lateralface of the abrasive disc 68 with the work, and thereby avoids abradingaway a large portion of one side face of the abrasive disc 63.

It will thus be seen from the foregoing description, considered inconjunction with the accompanying drawings, that the present inventionprovides a new and improved machine tool having the desirable advantagesand characteristics, and accompanying its intended objects, includingthose hereinbefore pointed out and others which are inherent in theinvention.

1 claim:

1. A work table structure for movably supporting work holding means in apredetermined relation relative to a rotary metal working tool, saidwork table structure comprising, in combination,

(1) a supporting frame structure including support means for supportinga rotary metal working tool and allowing a tilting motion of the arborthereof, and for supporting a table bed;

(2) a lower bed member supported on said supporting frame structure,said table bed including two rotatable hand wheels mounted parallel toeach other on the front end portion of said lower bed member;

(3) a three sided, open, intermediate frame unit including a guide railmember at the front thereof, said frame unit being reciprocably movablein a first direction in response to rotation of one of said hand wheels,and mounted above said bed member; and

(4) an upper table member, including work holding means thereon, saidtable member being disposed above said intermediate frame unit, restingon said guide rail member of said intermediate frame unit, reciprocablein a second direction perpendicular to said first direction, andincluding means thereon for allowing reciprocation in response torotation of the the other of said hand wheels.

2. A table structure as defined in claim 1 in which said supportingframe structure includes means thereon for allowing said lower bedmember and the units supported thereon to be inclined as a unit.

3. A table structure as defined in claim 1 in which one of saidadjusting hand wheels includes a pinion gear and a shaft thereforattached thereto and mounted immovably relative to said hand wheel andwherein said means 6 for reciprocating said upper table member includesa rack element engageable with said pinion gear.

4. A table structure as defined in claim 1 which also includes means forreciprocably moving said pinion gear along said shaft upon movement ofsaid upper table member, whereby said rack element and said pinion gearremain in operative engagement throughout the reciprocating cycle ofsaid upper table member.

5. A work table and workholder therefor, comprising a supporting frame,a bed carried by the suporting frame, a workholding table carried by thesaid bed above and generally parallel thereto, operating means formoving the said work-holding table longitudinally relative to and acrossthe said bed, and additional operating means for moving the saidWork-holding table transversely across and relative to the said bed, thesaid means for moving the said work-holding table longitudinallyrelative to and across the said bed including a rack member carried bythe said work-holding table at one side thereof, means carried by thesaid bed for moving the said rack member and the said work-holding tablelongitudinally relative to the said bed, the said means for moving thesaid workholding table transversely across and relative to the said bedincluding an operating member slidably mounted on the said bed andengageable with the said work-holding table for slidably moving the saidwork-holding table across and relative to the said bed, and meanscarried by the said bed for slidably moving the said operating memberacross and relative to the said bed, the said operating member beinggenerally U-shaped in form and including a front wall portion adapted toengage a front edge portion of the said work-holding table, the saidgenerally U-shaped operating member including :a pair of arm portionsadapted to engage the end edges of the said workholding table, the saidfront Wall portion of the said U-shaped operating member having anupstanding longitudinally extending rib therein, and the saidwork-holding table having guide means thereon cooperating with the saidupstanding longitudinally extending rib on the said front wall of thesaid U-shaped operating member for guiding the said work-holding tableduring slidable movement thereof longitudinally across and relative tothe said bed.

6. A work table and workholder therefor, comprising a supporting frame,a bed carried by the supporting frame, a Work-holding table carried bythe said bed above and generally parallel thereto, operating means formoving the said workholding table longitudinally relative to and acrossthe said bed, and additional operating means for moving the saidwork-holding table transversely across and relative to the said bed, thesaid means for moving the said work-holding table longitudinallyrelative to and across the said bed including a rack member carried bythe said work-holding table at one side thereof, means carried by thesaid bed for moving the said rack member and the said work-holding tablelongitudially relative to the said bed, the said means for moving thesaid work-holding table transversely across and relative to the said bedincluding an operating member slidably mounted on the said bed andengageable with the said work-holding table for slidably moving the saidwork-holding table across and relative to the said bed, and meanscarried by the said bed for slidably mov ing the said operating memberacross and relative to the said bed, and the said U-shaped operatingmember including guide bracket means carried by one arm of the saidU-shaped operating member for guiding the same rack member duringmovement thereof.

7. A work table and workholder therefor, comprising a supporting frame,a bed carried by the supporting frame, a work-holding table carried bythe said bed above and generally parallel thereto, operating means formoving the said work-holding table longitudinally relative to and acrossthe said bed, and additional operating means for moving the saidwork-holding table transversely across and relative to the said bed, thesaid means for moving the said work-holding table longitudinallyrelative to and across the said bed including a rack member carried bythe said work-holding table at one side thereof, means carried by thesaid bed for moving the said rack member and the said work-holding tablelongitudinally relative to the said bed, the said means for moving thesaid workholding table transversely across and relative to the saidbedincluding an operating member slidably mounted on the said bed andengageable with the said work-holding table for slidably moving the saidWork-holding table across and relative to the said bed, and meanscarried by the said bed for slidably moving the said operating memberacross and relative to the said bed, pivot mounting means for pivotallymounting the said bed at one end J. SPENCER OVERHOLSER, Examiner.

thereof for pivotal movement relative to the said supporting frame, andmanually operable micrometer means for pivotally moving the said bed,the said Work-holding table, and the said operating means on the saidpivot mounting means as a unit.

5 References Cited by the Exaer UNITED STATES PATENTS 351,214 10/86Slade.

2,141,751 12/38 Hertlein 90-58 2,448,200 8/48 Walter 90-58 X 102,539,506 1/51 Bura.

2,862,410 12/58 Meyer.

2,933,022 4/60 Stark 9058 LESTER M. SWINGLE, Primary Examiner.

6. A WORK TABLE AND WORKHOLDER THEREFOR, COMPRISING A SUPPORTING FRAME,A BED CARRIER BY THE SUPPORTING FRAME, A WORK-HOLDING TABLE CARRIED BYTHE SAID BED ABOVE AND GENERALLY PARALLEL THERETO, OPERATING MEANS FORMOVING THE SAID WORK-HOLDING TABLE LONGITUDINALLY RELATIVE TO AND ACROSSTHE BED, AND ADDITIONAL OPERATING MEANS FOR MOVING THE SAID WORK-HOLDINGTABLE TRANSVERSELY ACROSS AND RELATIVE TO THE SAID BED, THE SAID MEANSFOR MOVING THE SAID WORK-HOLDING TABLE LONGITUDINALLY RELATIVE TO ANDACROSS THE SAID BED INCLUDING A RACK MEMBER CARRIED BY THE SAIDWORK-HOLDING TABLE AT ONE SIDE THEREOF, MEANS CARRIED BY THE SAID BEDFOR MOVING THE SAID RACK MEMBER AND THE SAID WORK-HOLDING TABLELONGITUDINALLY RELATIVE TO THE SAID BED, THE SAID MEANS FOR MOVING THESAID WORK-HOLDING TABLE TRANSVERSELY ACROSS AND RELATIVE TO THE SAID BEDINCLUDING AN OPERATING MEMBER SLIDABLY MOUNTED ON THE SAID BED ANDENGAGEABLE WITH THE SAID WORK-HOLDING TABLE FOR SLIDABLY MOVING THE SAIDWORK-HOLDING TABLE ACROSS AND RELATIVE TO THE SAID BED, AND MEANSCARRIED BY THE SAID BED FOR SLIDABLY MOVING THE SAID OPERATING MEMBERACROSS AND RELATIVE TO THE SAID BED, AND THE SAID U-SHAPED OPERATINGMEMBER INCLUDING GUIDE BRACKET MEANS CARRIED BY ONE ARM OF THE SAIDU-SHAPED OPERATING MEMBER FOR GUIDING THE SAME RACK MEMBER DURINGMOVEMENT THEREOF.